* Initial 1.19.1/2 signed chat impl
* lint
* remove node 15 nullish operators
* fix undefined uuid error
* handle player left
* fix
* add some feature flags
* fix
* Fix test to use new client.chat() wrapper method
* refactoring
* corrections, working client example
* refactoring
* message expiry checking
* Fix UUID write serialization
* Remove padding from client login to match vanilla client
* Fix server verification
* update packet field terminology
* Add some tech docs
Rename `map` field in Pending to not conflict with Array.map method
* update tech doc
* lint
* Bump mcdata and pauth
* add doc on playerChat event, .chat function
* update doc
* use supportFeature, update doc
Co-authored-by: Romain Beaumont <romain.rom1@gmail.com>
